My understanding of the business is that the item IS shipped directly to the consumer. I send them X bitcoins (plus a $2 fee), and a link to amazon.com item, and they buy it for me using their credit card, and Amazon ships it to me not them.
I learned the command line by using the command line. When I switched to Arch Linux, using bash was inevitable. It took many Google queries and reading many man pages to finally become comfortable in it.
What determined the outcome of your service was the convenience factor. To use it, the user needs to select the information, go to your webpage, and then submit it. It's too much work for the user.
OP's program removes 1/3rd of the steps, making it much easier for the user.
https://lh5.googleusercontent.com/--gAC0BE9NrA/UUCiUYUp90I/A...